The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 03, 2026

Filed:

Dec. 30, 2024
Applicant:

Realtek Semiconductor Corporation, Hsinchu, TW;

Inventors:

Hsueh-Yu Kao, Hsinchu, TW;

Yi Feng, Hsinchu, TW;

Chih-Lung Chen, Hsinchu, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 19/00 (2006.01); H03K 19/0175 (2006.01);
U.S. Cl.
CPC ...
H03K 19/0005 (2013.01); H03K 19/017545 (2013.01); H03K 19/017581 (2013.01);
Abstract

A circuit with calibration function includes a fully differential amplifier circuit, two voltage generation circuits, two multiplexers, a comparator and a digital logic circuit. The fully differential amplifier circuit amplifies a pair of differential input voltages to generate a pair of differential output voltages. One voltage generation circuit utilizes a first current to flow through a capacitor to generate a first voltage. The other voltage generation circuit utilizes a second current to flow through a resistor to generate a second voltage. The multiplexers provide the pair of differential output voltages or the first and second voltages to the comparator according to a digital control signal. The digital logic circuit generates a first digital code to adjust a capacitance of the capacitor or a second digital code to adjust DC voltage levels of the pair of differential output voltages according to the comparison signal provided by the comparator.


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Quick Actions:

Kao, Hsueh-Yu. (2026). Circuit with calibration function and circuit calibration method (U.S. Patent No. 12785686). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12785686

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